Nut-lock.



110.889,593. l PATBNTND JUNE 2, v1908.

J. C. FLEISCHMANN.

NUT LOCK. APPLIOATION FILED DE0.19,1907.

JOHN FLEISCHMANN, or LrTrrz, PENNSYLVANIA.

NUT-LOCK. f.

`Specification of Letters Patent.

`A Patented June 2, isos.

Application filed December 19,1907. Serial No. 407,227. i

To all whom it mayconcern:

Be it known that I, JOI-IN C. FLEIsoHM ANN,

a citizen of the United States, residing at Lititzin the county of Lancaster, State of Pennsylvania, have invented certain new and useful Improvements in Nut-Locks g and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled. in the art to which it appertains to make and use the same.

This invention has relation to a new and useful improvement in nut locks.

My invention consists in constructing a nut lock from a single piece of spring sheet metal which is given a frusto-conical shape having a lower approximately cylindrical serrated gri ping flange, this flange being adapted to e held in yielding or cushioned contact with thelbase to which it is secured and in conjunction with this spring washer I use a nut rovided kwith a plurality of angled faced) seatings adapted to be engaged by one or more lears which are stamped up. from and form an integral part of the s ring washer as will be disclosed more fu ly hereinafter.

In the accompanying drawings Figure 1 shows a face view of a Washer embodying my invention. Fig. 2 discloses an edge view thereof. Fig. 3 shows a washer and nut constructed according to my invention partly in secti'omand, Fig. 4L a bottom -view disclosing the seating-providedunder face of.

the nut as used in my invention.

The nature of my invention consists in the construction of a nut and a Washer adapted to be detachably secured and constructed to prevent any accidental rotation of the nut.

In carrying out the object of my invention I construct a washer 1 made of a single piece of spring sheet metal Which is stamped or cut out round as shown in Fig. -1 and is provided with a central bolt opening 2. Surrounding this bolt opening 2 is a flat circular portion 3 which forms a base u on Whichthe nut shown in dotted outline in `ig. 1 rotates. The portion extending beyond this base forming portion 3 is provided with a set of radially disposed slots -l which slots or incisions extend up to said `llat circular portion 3 as is clearly shown in Figs. 1 and 2. By these means I provide the washer with four wings 5 and these are then curved and bent at an angle to the base portion 3V as isshown in Fie. 2 to give Said washer a cone-shaped conforma.-

tion, the edges linally of each wing portion being 'bent at an angle as is shown more clearly in Fig. 2, the peripheral edges of these portions 6 forming approximately cylindrically disposed gripping flanges as clearly shown. Stamped up from the circular por tion 3 and forming an lintegral part thereof are the spear headed or pointed ears 7 as clearly disclosed in Fig. 1. ,In connection with such a washer I 'use an ordinary bolt 8 as shown in Fig. 3 to which is secured a nut 9, the under face of which 1() -is provided with angled .faced seatings 12, against the vertical or abrupt shoulder 13 of which the stop ears 7 lind a seating as shown in Fig. 3. In this last mentioned ligure the nut 9 is shown as having been forced down to lind a firm seating upon the base surfaces 3 of the washer which results in they wing portions 5 being strained and spring held so that their serrated edges -are in a spring cushioned contact with the base surface to which the washer is clamped. Now any displacement of this nut 9 wil be prevented in that the shoulders 7 will be in engagement with the nut whilethe gripping ianges 6 will beso firmly cushioned against the base as to take up and compensate any trembling or 'arring movement that might otherwise tend to 'dislodge or accidentally rotatethe washer.

It is ofcourse understood that these washers can be used in securing nuts to wooden or other base surfaces and that they may be made of various sizes and different materialsl Having thus described my said invention What I claim as new is 1. A complete spring washer made of a single piece of sheetmetal having a central bolt perforation and a flat circular portion surrounding said perforation, of-ears stamped up from said circular portion and forming an integral part thereof, said washer being pro vided with a plurality of radial border incisions extending up to said flat circular portion forming wings7 said wings being curved and bent at an angle to said iiat portion to give said washer a cone-shaped conformation, the edges of each wine vportion being serrated and bent at an ange to said wing portions to forin an approximately cylin` drical gripping flange as disclosed.

2. A complete spring washer made of a single piece of sheet metal having a central' bolt perforation and a flat circular portion surrounding said perforation, or ears stamped up from said circular portion and forming an integrl part thereof, said Washer being prodrical grippingflenge, and anuthavng angled 10 .vlded Wlth aiv plurality of radial borderl infaced-seatings adapted to be enga-ged by said faisions extending up to said flat circular porears, all arranged as disclosed.

tion formingwings, said Wings being curved In testimony whereof, I @IEX my signa- Kil-'5. and bent aten angle to said fiat portion to' ture, in presence of'two Witnesses.

:` 'give said Washer a cone-shaped oon'r'o'rma- JOHN C. FLEISCHMANN.

tion, the edges of each Wing portion being Witnesses: serrated and bent at an angle to said Wing HARRYIKEPPEL,

portions to form an approximately oylin- WILLIAM KrssrNGER. 

